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ffb7bcd3b2
Modern exynos SoCs can support self loopback mode via setting BIT(3) of MODE_CFG register. Previous SoCs don't have the bit so we need to add has_loopback field in the s3c64xx_spi_port_config. Exynos Auto v9 SoC has the bit and it will define the field to "true". When it is set, SPI_LOOP mode will be marked. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Andi Shyti <andi@etezian.org> Signed-off-by: Chanho Park <chanho61.park@samsung.com> Link: https://lore.kernel.org/r/20220629102304.65712-2-chanho61.park@samsung.com Signed-off-by: Mark Brown <broonie@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.